Loom stopping means



April 14, 1959 c. G. MOON LOOM STOPPING MEANS Filed April 4,. 1955 4Sheets-Sheet 1 MOTOR VOLTAGE V INVENTOR. ,/CL|FFORD 6. Moon:

A TTORNEY c. G. MOON LOOM STOPPING MEANS April 14, 1959 4 Sheets-Sheet 2INVENTOR. CLIFFORD 6. Moon:

Filed April 4, 1955 A ORNE Y 4 Sheets-Sheet 3 IIIIII N .w G R NM m v K Gl lirl iinm mm. Tm UL. 0 Wm F .n @2 w 8H 8 .t mm L S Q n m9 5 Q2 c MH 3a 5 o n m m\\\ O V. m R m2 mo 08 O B "m g Q Mm I b n ma i 8 m2 l. V .H.P. MU ll! \ll 1111 \l I 5 5 x c. 6." MOON LOOM STOPPING MEANS FiledApril 4, 1955 April,l4, 1959 5 k E m N2 62 0Q m2 m3 0 m April 14, 1959c. G. MOON LOOM STOPPING MEANS 4 Sheets-Sheet 4 Filed April 4, 1955 8 Emw l k R f m m N m m W H m. m 1% m a W w: E E m V. 5 L W J ll u r u 0 x5 D q l "h" E Q N: 85 02 0: m2

United States Patent LOOM STOPPING MEANS Clifford G. Moon, Hopedale,Mass., assignor to Draper Corporation, Hopedale, Mass., a corporation ofMaine Application April 4, 1955, Serial No. 499,110

13 Claims. (Cl. 139-336) This invention relates to loom stopping means,and more particularly, to such means for stopping the loom at particularpositions within the cycle, also to a novel mechanism for effectingtransfer from a center fork type of filling stop means.

It is a general object to simplify and to make easier the control of theloom.

A further object is that of providing stopping means which shall stopthe loom in the most advantageous position for repairing a defectivewarp or filling thread, also, to provide simple push button controls ata convenient position on the loom for selectively stopping the loomthrough the automatic stop mechanisms in either the harness level oropen shed positions.

-It is a more specific object to devise such mechanism which shall belargely mechanical as contrasted to electrical in its construction andtherefore very inexpensive and easily serviced.

A further object is that of providing for making single picks bystopping the loom from the filling stop side and then using the shipperlever to start the loom.

Another object is that of using the center fork motion for transferringa full bobbin rather than stopping the loom at filling failure for anyreason, and then stopping the loom if a fault still persists after twosuccessive attempts at transfer.

Other objects will become apparent from the following more detaileddisclosure.

In looms for weaving it is common practice to employ stop motions whichbring the mechanism to a stop upon failure of a warp thread, a fillingthread or at so-called, mechanical stops as, e.g., when a shuttle is tooimproperly boxed for the loom safely to continue in operation. There hasbeen some eflort spent in the direction of stopping at a definiteposition, but for the most part looms in operation stop as quickly aspossible after indication of a fault and most of the time the weaver hasto use the hand wheel to bring the mechanism into the best position forrepairing the particular difiiculty at hand.

It is well known that to tie in a broken warp end the harnesses shouldbe level while the shed open position best serves to facilitaterepairing a filling break or mispick of some sort.

While center fork type stop motions have been used for many years, therehas been no instance known to applicant where such a device has beenemployed to transfer or replenish rather than stop the loom. In certainclasses of goods that is important and yet for other reasons it is moresatisfactory to use a center fork stop means. Here advantages of bothare provided so that one may run extremely fine goods or may weaveuncritical material under conditions of maximum production.

According to the invention, cam control means is provided, one for thewarp stopping function and another to control filling stops. The warpstopping may be initiated through the usual electric or mechanical warpstop motion 2,881,807 Patented Apr. 14, 1959' stop the loom through theknock-off means as the cam and a follower means acting thereon affectthe dagger.

Similarly a filling failure is indicated by the center fork whichfunctions through mechanical means to set another dagger and, in turn,to stop the loom as timed by the filling stop cam. These cams areadjustably positioned so that each type of stop is effected leaving themechanism in the most favorable position for attention by the weaver.

Normally a loom is stopped manually by the shipper lever which, ofcourse, does not stop the mechanism in a specific position which mightbe desired depending upon the reason for stopping it. Turning the handwheel to bring the loom to a harness level, open shed or other desiredposition is time consuming and arduous, and with this in mind, theinstant invention is directed as well to providing manual stop means inthe form of push buttons which accomplish this desired result. One pushbutton acts through the warp stop cam and the other through the fillingstop cam to stop in the proper positions.

The filling stopping means is associated with a center fork which actsthrough a mechanical dagger setting means and is so devised that onceset to indicate a stop, it retains that setting until manually released.Thus the invention makes possible the control of the loom by the shipperhandle to make single picks without particular skill. As is well knownsingle picking requires a knowledge of the loom timing and can beeffected by the skilled weaver without trouble, but with the presentdevice the loom may be started and will definitely stop after one pickand with the shed in open position. 1

A system of lights for indicating loom condition may or may not be usedwith the stopping means.

In the event the loomis to be run to transfer on filling failure, amodification to be described makes it possible to do that from thecenter fork. The fabric take-up is also let back anappropriate amountautomatically. Other means forming a part of this modification stops theloom after a predetermined number of transfer or transfer attempts ifthe loom, still persists in other successive tries at replenishingtheshuttle. I

The invention will be described in greater-detail by reference tocertain embodiments thereof as illustrated in the accompanying figuresof drawing wherein:

Fig. 1 is a side view of a part of a loom to which th invention has beenapplied.

Fig. 2 is an enlarged showing of part of the mechanism of Fig. 1,especially the part of the device effecting filling stops. I

Fig. 3 is a front view of the mechanism of Fig. 2

Fig. 4 is detail view of cam control for the daggers effecting knock-offfrom either warp or filling failures.

and control therefrom to a dagger or the like serves to I Fig. 5 is afront view of parts shown in Fig. 4.

Fig. 6 is a detail view of push buttons at the front of the loom forstopping selectively in predetermined positions.

Fig. 7 is a plan view of the maens illustrated in Figs. 4 and 5.

Fig. 8 is a schematic showing of the light circuit and 0 that forstopping at two successive tries at transfer.

Fig. 9 is a modification of parts in Fig. 2 providing for transferringfrom the center fork.

Fig. 10 is a front view of the mechanism of Fig. 9.

Fig. 11 is a plan view showing in detail certain connections fortransferring from a center fork indication.

Figs. 12 and 13 are sections at line 12--12, Fig. 11, illustratingdifferent positions of a means to stop the loom at the second successivetransfer.

Now referring to Figs. 1, 2 and 3, part of a loom to which the inventionhas been applied includes a loomside 20, swords 21 pivoted on a rockshaft 22 and carry 3 ing the usual lay structure-23; Warp threads T aredrawn from a" beam (not shown) and pass through heddles in harnessmechanism generally denoted by numerals 24 and 25. Filling is insertedin any acceptable manner after each pick of which the lay is moved tobeat in the means and is wound on a fabric roll by means, most ofwhichis not shown since it is conventional,- but which does'include aratchet wheel 31 for driving the take-up. This-wheel is'ratcheted by afeed pawl 32 pivoted at 33' on one arm 34 of a lever pivotedon the wheelshaft'35, the other arm 36 of which is connected as is common practice,by a link 37to sword 21 or to an adjunct 38' thereto. A stop pawl 39pivoted at a fixed stud 40 prevents retrograde motion of the wheelexcept as the pawl is raised by a link 41 connected to knock-off meansto be described.

A shaft 42 extends across the frontof the loom and to it is fixed ashipper lever 43 the'downwardly extending armof which is connected to aslotted clevis or other connection 44 at the end of a link 45 extendingrearwa'rdly of the loom, the purpose of which will be de-* scribed indue course.

At the end of crankshaft 28 there are fixed two earns 46 and 47, theformer for controlling position stopping of the loom'upon warp failureand thelatter for the same function when filling fails. The cam 46 actsagainst a follower end 48 of an arm 49 pivoted at 50 and spring urgedinto contact with the cam. A forked bunter 51 is adjustably fixed in thearm and is engaged with a dagger 52 which is hinged at 53 in a forkedmember 54 into which link 45 is threaded and locked by nut 55. Thisforked member is maintained in' proper elevation by shackles 56 and 57,one at either side, the upper ends of which are connected to the outerends of pivot rod 53, their lower, ends being'interconnected throughpivot pin 58-. Pin 53 is a common pivot for several members as willappear.

A bracket generally denoted by numeral 59 is fixed to the loomside bypad 60 and extends outwardly at 61 to present a mounting for pin 58 anddownwardly at 62 to take' pin 50 upon which arm 49 is pivoted. Theextension 61 projects further to the rear at 63 to support a holder 64for one end of a rod 65 which passes through the holder and connects atits lower endto an arm 66 at solenoid 67. This solenoid is that which isenergized whenever an indication of warp thread failure is received fromthe warp stop motion 30. It is not necessary togo into detail concerningsolenoid" 67 'and its' connectio'ns' to the warp stop motion as they areW'ell'known, see US. Patent 2,378,895:

Whenever a warp thread fails a" circuit is completed through thesolenoid moving arm 66 upwardly and pushing rod 65' against dagger 52 toelevateit to a position to be engaged by bunter 51. The signal for awarp stop can, of course, occur at any time, but the actual" stopping ofthe loom is controlled and timed by cam 4 6 which is preferably set tobring the loom to a rest position with harnesses 24, 25 level.

According to the invention, stops resulting from filling failure arealso positioncontrolled, although preferably for-stopping, at ashedopened position. While not entirelyessential in the broader sense, it ismore acceptable that stopping indications be derived from a center fork.Such means is generally indicated by'numeral 68-, but need notbe'further-illustrated or described as the same are well known. andevid'ent'inTJS. Patent 2,191,413. The indication. is..conveyedto-'meehanismto bedescribed 4 through a rod 69 reciprocated in guide 70.The end of this rod aligns with a bunter 71 having a' notched end"engageable by the rod end only when the fork senses a filling fault. Atother times the rod end is withdrawn as the lay moves forwardly so thatthere is then no contact of the rod and bunter.

The bunter is fixed at the end of a rod 72 which is slidable in bunterrod bearing 73, a spring 74 normally urging the parts to the position ofFig. 2. A stop collar 75 limits motion of the parts. Bearing 73 ispivoted at 76 the latter being a stud held in a bracket 77 attached tothe loomside and on which a boss 78 extending upwardly from the bearingis freely rotatable. A spring 79 is fixed at its front, lower portion toa horizontal part 80 of the bracket 77 and tends to push the wholebunter assembly upwardly against a stop screw 81.

This bunter acts through a lug 82 to set a three armed detent which hasa three fold function. This detent 83, when the hunter is pushedforwardly, is forced clock wise about its pivot 84, Fig. 2, until thearm 85 thereof is latched in notch 86 of a' two armed catch 87. Thiscatch is pivoted on stud 8'8 and a spring 89 pulls it to latchingrelationship with arm 85. The opposite arm of the catch is extendedlaterally at 90 to extend under the spring and bunter so that when thebunter end is forced down, the other end' of the catch is raisedagainstthe tension of spring 89 to release the'three armed detent "83.

That detent has a second'arm 91 overlying the end 92' of a Bowden wire:cable' held in a bushing 93 fixed in boss 94 of an arm 95 which is anextension from the bracket 77. This Bowden wire control cable extends toa similar holder 96 at another arm in the forked part of extension 61,Fig. 7. At that point the cable end extends just beneath a seconddagger97 similar to dagger 52, but having a lateral extension 98,. thepurpose of which will be explained later. Each of these daggershas atail 'portion to prevent raising past a horizontal position, and bothpivot at 53.

The cam 47 aligns with follower 99 at the upper end of arm 100 alsopivoted at 50, Figs. 4 and 5, which has adjustably threaded therein aforked bunter 101. The latter engages dagger 97 upon indication of afilling fault and knocks off the loom by pushing forwardly on link 45just as is'the case when similar parts function at a warp failure. Inone event cam 46 and in the other cam 47" controls to stop the loom inthe proper positions.

Returning to Figs. 2 and 3, a third arm 102 of the three armed detentserves to raise the feed pawl 32 through a link 103 connected to the armat its upper end and to one arm 104 of a lever pivoted at105 to bracket106. The other arm 107 of this lever carries" a follower 108- whichbears on the tail 109 of the feed pawl. Whenever the detent is actuatedby'bunter'71, the pawl israised to permit let'back on the'takemp. Aspring 110 tends to keep the detent in its inactive position, Fig. 2.However, when thebunter is pushed forwardly upon indication fro'rn'thecenter fork, lu'g 82 engages the'end of arm 85 and swingsthe parts untilthe said end of arm 85 latches in notch 86. That position is maintaineduntil released manually.

When stopped as just above described, the loom may be started bythe'shipper'lever, but will stop after the first pick since dagger 97,Fig. 4, remains raised.

Upon starting, unless one wishes to make single picks, the hunter 79 is'pushed down by a plunger 111. The latter isslidable in guide bearings11-2 and 113, part of a .bracket held in place on stud 76 extended, byset-screw 114. The end of the plunger stem engages a latch pivoted at116 and normallyin the position of Fig. 2. When the plunger is pushedin, latch 115 is swung into place against the top of the bunter. Itforces that memher down to strike the lateral extension 90- of arm 87 torelease the end of arm-85 from noteh86. That'permits the-take-up toresume action.

On the first pick at starting the lay comes forwardly and trips thehunter 71 as an abutment in the form of a screw 117 strikes latch 115pushing it past center so that the tension in spring 79 may return theassembly to normal running position, Fig. 2.

Now having described the automatic stopping of the loom, the added meansfor push button control will be explained. In Figs. 2 and 6, a controlbox 118 is mounted on the front of the breast beam or at some otherconvenient place and two push buttons 119 and 120 control stopping atthe harness level and the shed open positions, respectively.

The push button 119 closes a switch within the box 118 and through leads121 and 122 the solenoid 67 is grounded to stop the loom with harnesseslevel. Actually this is an alternate way to efliect a position stopthrough the warp stop means.

The push button 120 is fixed to the end of a Bowden wire control 123which runs back to the dagger 97, or, more precisely, to the extension98 thereof. That end of the cable is held in a ferrule 124, Fig. 7, sothat as the button 120 is pushed, the other end of wire 123 raises thedagger 97 so that cam 47, follower 99 and bunter 101 act to stop theloom through link 45 and the knockoff lever.

A system of signal lights may be provided and is shown in Fig. 8. Eachstop means has associated therewith a micro-switch or the like so thatwhen the loom is stopped through that particular means, its associatedlamp is lighted.

The electric circuit includes a transformer 124 by which any convenientsource of current is reduced to about 12 volts. The secondary of thistransformer is grounded and current is carried to the solenoid 67 whichhas been described above and which, when grounded, raises dagger 52 intothe path of hunter 51. The solenoid circuit may be completed throughground at the warp stop motion 30 or by push button 119. A micro orother switch is associated with each stopping device and controls itsrespective light.

The circuit shown in Fig. 8 includes three lamps, red for the mechanicalor bank-off stops, green for filling, and white for manual or warpstops. The green lamp is, as are all the rest, grounded at one sidewhile at the other it may be connected to the transformer secondarythrough its own micro-switch 126. As in Fig. 4, this'is a standardswitch with an actuating arm 127 connected by a spring 128 to the member54. Normally, this and the other switches are set to conduct accordingto the full line showing. The dotted line position is that whichprevails after a stop, that is, when spring 128 has pulled arm 127 to aposition to depress the switch plunger 129. The circuit for the lampsincludes the other switches also, but on following through it can beseen that in bang-olfs and filling stops the respective switches will beactuated, but in all events the link 45 moves to knock-off the loom andtherefore switch 126 always functions.

A switch 130, Figs. 2 and 8, is connected by spring 131 to arm 91 to beactuated whenever the loom stops on a filling break.

. Likewise a similar switch 132 is tied by spring 133 to the frog 134 sothat at bang-off this switch makes contact to complete a circuit throughits lamp (red). This switch is locked in tripped position by a catch 135'so that at mechanical stops the weaver or fix-er should manuallyrelease switch 132 before starting the loom. At warp stops the switch126 assumes the dotted line position. Then the circuit through the whitelamp can be traced from the transformer secondary to the ground side ofthe lamp. Switches 132 and 130 in normal position form a part of thecircuit.

At a filling stop, both switches 130 and 126 are tripped while thatat.132 remains as at running position. The circuit then passes to thegreen lamp.

In the case of a bang-off,,switch, 130 is undisturbed while switches 126and 132 are actuated. The circuit then passes current to the red lamp. v1

At bang-off stops frog 134 functions in the usual way to affect lever 43through rod 136, the endof which engages the head of an abutment screw137 adjustably fixed in depending arm 138 of the shipper lever.

The instant mechanism is intended to be used in-the form abovedescribed, either with or without the signal lights. With it, or as anindependent device; certain mechanism presently to be described isadapted to be used to transfera full bobbin to the shuttle upo'n indication of filling failure by the center fork' motion. With some grades ofgoods an imperfection in the fabric is less important than productionso, rather than to stop the loom at filling failure, a transfer of afull bobbin from the battery is effected so the loom continues to weave.This transfer, as will be described, is effected by means under controlof the center fork motion.

Now referring to Figs. 9-13, the breast beam of the loom mounts astarter shaft 139, arm 140 fixed to the shaft and pivoted at 141 to afilling feeler slide 142 mounted in a stand 143. At its rear end thisslide is extended laterally at 144, Fig. 11, and is forked to pivot at145 a lifting lever 146 the position of which is governed by connectingrod 147. The rear end of the slide is also slotted to receive thenotched end 148 of a filling cam follower trip 149. The latter isattached at the upper end of a lever pivoted below and actuated by a cam(not shown) by means of which the slide 142 is moved to rotate thestarter shaft as is necessary to set the transfer mechanism in a mannerknown to those conversant with this art. Normally, the trip 149 swingsto and fro and enters the notched end of the slide, but since liftinglever 146 is inactively positioned, there is no effect on the slide.However, when a transfer is necessary to replenish the filling supply inthe shuttle, the rod 147 is actuated by a filling feeler of anysatisfactory type to project the lifting lever 146 into the notch at thetip of trip 149. The lever and slide then move'together to set the loomfor transfer.

By mechanism presently to be described, this function is also caused totake place whenever the'center fork indicates filling failure. The endof rod 69 remaining in extended position contacts bunter 71 pushing itforwardly to rock the three armed lever 83 until the end of arm 85 islatched in notch 86. It is to be understood that ferrule 93 is loweredor in some way the end 92 of the Bowden cable removed from a position inwhich it can be actuated by arm 91, since the loom is no longer to stopat filling failure. Switch 130 may also be removed or disconnected inthat there is no need for a: light to act at filling stops, although asa part of the circuit it may have a function unless the circuit is to bealtered. .-i

As the hunter sets the three armed lever, a bell crank lever having arms150 and 151 connected through a vertical pivot member 152 is swungangularly. This lever is borne in bearing member 153, Figs. 10 and 11,while arm 150 extends into an opening 154 in arm 85. A collar 155 holdsthe parts at intended elevation. The arm 151 engages an offset part 156of the rod 147 so that as arm 85 moves the bell crank is turned in itsbearing and arm 151 forces the rod to the right, Fig. 10, just as wouldthe filling feeler. That motion sets the lifting lever 146 at the propertime to engage the notched end of lever 150 and again, transfer iseffected, but as a consequence of filling failure rather than uponexhaustion thereof. I

Having set the mechanism for transfer, it would continue to do thatevery time the shuttle entered the box at the battery end of the loom ifthe setting were not tripped. For that, a lever 157, Figs. 9, 10 and 11,is controlled to pull the latch 87 upwardly to release the three armedlever through a link 158. This lever is attached to one end of a pivot159 rotatable in bearing 160=and Y 5881, so?

at other end of; which. is' fixe'dthe opposed arm. 161.- This latter armmounts-afollower pin 162-which is. con+ trolled by-a-cam 163.. Canr1'63is-pivoted at .164'on.the slide. 142 and. when the slide-is movedforwardly to set up acondition for transfer it merely pivots. overfollower 162 having'no efiect on. it. However,.after transfer the slide.moves to therear andthe cam is then. active to push arm 161 downwardlypulling up on link 158 to unlatch the arm 85 and permitthe parts toresume a normal, inactive position. 1

At filling-failure and the transfer which accompanies it there is amispick so the loom take-up should be let back. To accomplish that thefeed. pawl is raised by mechanism above described and: the stop pawl isconnected'by a link 165-to the same point as link 103, Figs. 2. and 9.Of course, theloom is. not knocked off so link 41 nolongerl may bereliedupon to raise the stop pawl. Preferably, it should be"disconnected.

To prevent more than one successive transfer, ameans is connected inthewarp stop motion circuit for grounding it in that event. A togglemountedbell. crankhaving arms 166' and 167,. Figs. 12 and 13:especially, may be swung to and fro as in these figures being. limitedin movement by stop pin 168-. Spring 169 holds the lever ineitherextreme position. Pivot 170 for the lever is mounted in a lug 171projecting upwardly from. the slide end.

Arm 166' has-attached toitsface a spring: contact strip 172. At timesthiscontact is to ground the warp stop solenoid circuit and a=conductor173 from lead 121 there of, Figs. 8 and 11, terminates at an insulatedmetal contact 174,. Fig. 13. Thisis' attached beneath a plate 175 ofinsulation material so that, whencontact172 engages the-upper orinsulated part, no ground is established; but when. it contacts thelower metal. piece"v the circuit is grounded and theloom is stopped.

At thefirst movement of the slide forwardly the arm.

167 is struck by screw 176 totrip' the bell. crank about its pivot,however, by the time the tripping occurs, con tact 172 is in position todescend on top of the insulation material and complete rotation to theposition of Fig. 13 does not take place until the slide moves to therear, or at least, contact 172. does not assume that position until thattime. On the next pick, if weaving is normally resumed, the filling camfollower trip moves forwardly without a corresponding motion for theslide 142 and a wire or other projection 177 strikes the pin 178 towhich spring 169'is attached and rotates arms 166 and. 167 to theinactive position, Fig. 12.

If a filling fault is again indicated at the next pick after transfer,there is likely to-be some difficulty necessifating, attention of theweaver and the loom is to be stopped. At such pick the lifting leverwill again lock the trip 149 and slide 142 for movement as a unit andinstead of being. reset, the contact 172' will strike the metal groundterminal 174 to complete the" warp stop circuit.- and thereby stop theloom.

The let-back of. the take-up has been described only so far as the meansincidental to this invention is adapted to release the take-up forletting back the fabric. The; actual. control for limiting let-back toan amount required may be that regularly supplied on looms of this type.Such are adjustable for the extent of motion required to assure areasonably uniform fabric.

Operation Now having" described the mechanism involved, the operationthrough various possible stopping sequences will be reviewed.

Assuming the loom to be running and that a warp thread fails, a dropwire at the warp stop motion grounds that. part of the circuit andsolenoid. 67 is energized raising. dagger 52. As cam 46 moves arm 49forwardly against a returnspring (not shown) bunter 51 picks up the.dagger and pushes element 54, rod 45' and arm 138,. Figs. 1 and 2,.to.the. front. to. actuatev control shaft 42 and stop theloom. Switch 126is. moved. to the dotted lineposition, Fig. 8, so. the circuit to thewhite lamp is completed.

A manual stop functions in much the same Way to light. the same lamp,but, of course, the warp stop parts are not disturbed.

For a filling stop, assume that the center fork indication isresponsible for indicator rod 69 remaining in extended position so thatit contacts bunter 71 as the lay moves forwardly. That part, andspecifically the lug 82 thereon sets lever 83 to be held in notch 86 oflatch 87, Fig. 2, and thereby starts a cycle of action including,raising dagger 97 through cable 92, lifting the feed pawl 32 andactuating switch 130.

As cam 47 rotates arm 100 and bunter 101 it affects link 45 through theraised dagger 97 and. stopsthe loom. In this event the stop occurs withthe shed open, while before at warp stop the harnesses were level as theloom came to rest.

The switch in. combinaton with switch 126, also affected, closes thecircuit to the green lamp to indicate a filling stop.

v This mechanism remains set until released by hand plunger 111 asdescribed. Of course, single picks are possible while the filling stopmotion is set. When released the loom may be started and will continueto run; the green light stays on until the arm 85 is released except fora momentary flash off when the shipper lever is pulled to start the loomfor a single pick. At the first pick after starting the lay by anabutment 117' trips member 115 to let bunter 71 rise to normal orrunning position. By the time it rises the indication at the center.fork will have been completed so there will be no danger of stopping. atthe first pick due to there being no filling under the fork at thattime.

A mechanical stop through frog 134, rod 136 and arm 138 affects switches132 and 126 to light the red lamp. Switch 132 must be manually releasedby latch 135 or some other convenient means, that being. a safety meansto assure that the reason for the stop, that is, a mechanical one, is.checked before starting again.

Push button control may be employed to stop in either shed open orharness level positions at will and thus, the weaver need no longerspend considerable energy and time bringing the loomto a desiredposition by the hand wheel.

If it is desired to operate the loom transferring from the center fork.indications, the use of. the means described in conjunction with Figs.9-13 makes that practical. The connections to the dagger 97 are disabledand the center fork motion by its action upon bunter 71 and three armedlever 83 rotates crank arms and 151 to set lifting lever 146 whereupontransfer is effected by the same mechanism which performs that functionat near exhaustion of filling in the shuttle.

The. toggle switch mounted. on the slide 142 then rotates, but effectsno completion of a circuit on the first transfer. If the loom returns tonormal operation, the switch is reset by projection 177.

As the slide 142 moves forwardly cam 163 pivots over a follower 162 onan arm which constitutes part of a re setting means. Return or rearwardmotion of the slide acts through that cam, arms 161, 157 and link 158 tolift latch 87' and release the three armed lever thereby permitting themechanism to return to position to act again at the next indication. Ifthe center fork indicates for a second successive transfer, theprojection 177 will not trip the toggle switch and as the'filling camfollower trip I49 moves forwardly contact 172 engages terminal 174 toground the warp stop motion circuit and stop the loom.

In transfers from the center fork as in ordinary filling stops, thetake-up is let back appropriately.

While one embodiment of the invention has been disc1osed',fit is to beunderstood that the inventive concept may be carried out in a number ofways. This invention is, therefore, not to be limited to the precisedetails de scribed, but is intended to embrace all variations andmodifications thereof falling within the spirit of the invention and thescope of the claims.

I claim:

1. In a loom the combination of warp thread-shedding means, a warp stopmotion and a filling stop motion, a knock-off means for starting and forstopping the loom manually, and position stopping means comprising ashaft rotatable in the loom, cams fixed to said shaft and means undercontrol of said warp stop motion affected by one of said cams forstopping said loom through said knockoff means upon indication of warpfailure, and other means effective upon an indication of filling failurefor stopping the loom through mechanism under control of the other ofsaid cams, said cams being adjustable for timing the point in the cycleat which said loom shall stop and push button actuated stopping meansinterconnected to said stopping means, above recited, for selectivelystopping the loom at either the harness level or shed open positions.

2. In a loom the combination of warp thread shedding means, a warp stopmotion and a filling stop motion, a knock-off means for starting and forstopping the loom manually, and position stopping means comprising ashaft rotatable in the loom, cams fixed to said shaft and meansincluding a cam follower, a link and forked member and a dagger undercontrol of said warp stop motion affected by one of said cams forstopping said loom through said knock-off means upon indication of warpfailure, and other means including a second cam follower and a seconddagger effective upon an indication of filling failure for stopping theloom through at least a part of the mechanism by which stopping iseffected at warp failure and under control of the other of said cams,said cams being adjustably positioned to stop the loom with barnesseslevel at warp failure and with the shed open at filling failure.

3. In a loom the combination of warp thread shedding means, a warp stopmotion and a filling stop motion, a knock-01f means for starting and forstopping the loom manually, and position stopping means comprising ashaft rotatable in the loom, cams fixed to said shaft and means undercontrol of said warp stop motion affected by one of said cams forstopping said loom through said knockoff means upon indication of warpfailure, and other means effective upon an indication of filling failurefor stopping the loom through at least a part of the mechanism by whichstopping is effected at warp failure and under control of the other ofsaid cams, said cams being adjustably positioned to stop the loom withharnesses level at warp failure and with the shed open at fillingfailure and push button actuated stopping means interconnected to saidstopping means, one said means being electrically connected within thestop motion circuit and the other being manually operable within thefilling stopping means, for stopping the loom selectively at the harnesslevel or at the shed open position.

4. In a loom the combination of warp thread shedding means, a warp stopmotion and a filling stop motion, a knock-off means for starting and forstopping the loom manually, and position stopping means comprising ashaft rotatable in the loom, cams fixed to said shaft, a means connectedto said knock-off means and including two daggers normally in positionto be unaffected by said cams, but movable selectively to a position inwhich they are affected by their respective one of said cams for movingsaid means connected to the knock-off means, one said dagger beingconnected for movement to active position by an indication from the warpstop motion, and the other being atfected by means interconnecting it tothe filling stop motion.

5. In a loom the combination of warp thread shedding means, a warp stopmotion and a filling stop motion, a

knock-off means for starting and for stopping the loom manually, andposition stopping means comprising a shaft rotatable in the loom, camsfixed to said shaft,'a means connected to said knock-off means andincluding two daggers normally in position to be unafiected by saidcams, but movable selectively to a position in which they are affectedby their respective one of said cams for moving said means connected tothe knock-01f means, cable means from said warp stop motion to one ofsaid daggers for positioning it actively at indication of warp failure,and other cable means from the filling stop motion to the other daggerfor positioning it actively at indication of filling failure.

6. In a loom the combination of warp thread shedding means, a warp stopmotion and a filling stop motion, a knock-off means for starting and forstopping the loom manually, and position stopping means comprising ashaft rotatable in the loom, cams fixed to said shaft, a means connectedto said knock-off means and including two daggers normally in positionto be unalfected by said cams, but movable selectively to a position inwhich they are affected by their respective one of said cams for movingsaid means connected to the knock-off means, cable means from said warpstop motion to one of said daggers for positioning it actively atindication of warp failure, and other cable means from the filling stopmotion to the other dagger for positioning it actively at indication offilling failure and push button actuated stopping means interconnectedto said stopping means, one said means being electrically connectedwithin the stop motion circuit and the other being manually operablewithin the filling stopping means, for stopping the loom selectively atthe harness level or at the shed open position.

7. In a loom the combination of warp thread shedding means, a warp stopmotion and a filling stop motion, a knock-off means for starting and forstopping the loom manually, and position stopping means comprising ashaft rotatable in the loom, cams fixed to said shaft, a means connectedto said knock-off means and including two daggers normally in positionto be unaffected by said cams, but movable selectively to a position inwhich they are affected by their respective one of said cams for movingsaid means connected to the knock-off means, cable means from said warpstop motion to one of said daggers for positioning it actively atindication of warp failure, and other cable means from the filling stopmotion to the other dagger for positioning it actively at indication offilling failure and push button actuated stopping means interconnectedwithin said automatic stopping means, one said means being electricallyconnected for grounding the warp stop motion circuit to stop the loom inharness level position, and the other being manually operable foraffecting that dagger identified with the filling failure stopping meansand operable for stopping the loom manually and at the shed openposition.

8. In a loom the combination of a Warp thread shedding means, a fillingfailure indicating means, a knockoff means for starting and for stoppingthe loom manually, and position stopping means comprising a shaftrotatable in the loom, a cam fixed to the shaft, a means connected tosaid knock-0E means and including a dagger normally in position to beunafiected by said cam, but movable selectively to a position in whichit is affected by said cam for moving that means connected to theknock-off means, and means for so moving said dagger upon indication offilling failure which comprises a pivoted and slidable member, a latchand lever means affected by said pivoted and slidable member andretained by said latch, cable means for imparting motion from the levermeans to the dagger, and manually operated means for simultaneouslydisplacing said pivoted means to become inactive for the first pick uponstarting the loom and for releasing said latch and lever means.

9, Mechanism; as; defined; int claim 8 wherein said meansgfor:displacing the; pivotedv means and for releasing; the latch comprises; apivoted member, a plunger for forcingsaid-member into engagement withthe said means to force it downwardly.

10; Mechanism asdefined, in claim 8- wherein said lever means isprovided for the further function of raising a take-up feed pawl topermit let-back of fabric.

11. In aloom the; combination of. warp thread sheddingmeans, a warpstopmotion and a filling stop motion, aknock-oif means for starting and forstopping the loom manually, andv position stopping means comprising ashaft rotatable in the loom, cams fixed to said shaft, a means connectedto saidknock-01f means and including two daggers normally-inposition tobe unaffected by said cams, but movable selectively to a position. inwhich they are affected by their respective one of said cams for moving;said means connected to the knock-01f means, one said' dagger beingconnected for movement to active positionv by an indication from thewarp stop motion, and the other beingaffected by means interconnectingit to the filling stop motion and a signal light circuit and switchmeans functioning with said warp and filling stop means; for selectivelyindicating the cause for stopping.

12. In a 100m the combination of a lay, a warp thread shedding means, awarp stop motion and a filling failure indicating meansperiodically'movable along the length of said lay and functioning fromindications from a center forkfilling sensingmeans, means for indicatingand setting a filling'replenishingmeans upon near exhaustion of filling;a knock-off means: for starting; andstopping the, loom manually,vstopping means: for stopping the loom at warp failure, other stoppingmeans, for stopping the loom at filling failure which comprises; abunter, allever eflective to actuate m knock-off means upon engagementof said means movable along the length of said, lay with said bunterwhen the 100m is to be stopped at a filling break, and meansinclndingsaid center fork filling sensing means and said means movable along thelength of the lay effective through said bunter and lever and actingupon said means for setting the filling replenishing means to transfer afull bobbin to the shuttle when said loom is set to effect suchreplenishmentat a filling break.

13. Mechanism as defined, in claim 12 wherein said meansfor starting thecycle of transfer has functioning therewith a means for resetting thebunter after engagement with the filling failure indicating means aftereach indication for transfer.

' References Cited invthe, file of this patent UNITED STATES PATENTS1,285,385 Rhoades Nov. 19, 1918 1,865,930 Lindsjo July 5, 1932 2,103,800Turner Dec. 28, 1937 2,151,199 Gledhill, Mar. 21, 1939 2,522,840 Rinneet a] Sept. 19, 1950 2,600,667 I Mason June 17, 1952 2,639,734 Brock May26, 1953

